Oh Soomin is a girl whose entire family including her, was murdered 200 years ago. Being the only one unable to pass on, she is confined to dwell in her home where she was murdered for eternity. One day, a group of seven boys move into the mansion, knowing about the murders, but not the spirit that watches them from day one. However, they soon find that they are not alone. Soomin reveals herself to them one day, and surprisingly, the boys decided to stay with her. Love blooms, but what happens when Soomin slowly begins to become human again?